foo.c:43:1: error: expected identifier or '(' before '}' token
 }
 ^
foo.c: In function 'main':
foo.c:15:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d",&n);
     ^~~~~~~~~~~~~~~
foo.c:21:10: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
          scanf ( "%d", &a[cnt] );
          ^~~~~~~~~~~~~~~~~~~~~~~

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